CN108233242B - 12kV high-voltage switch equipment - Google Patents
12kV high-voltage switch equipment Download PDFInfo
- Publication number
- CN108233242B CN108233242B CN201810200358.7A CN201810200358A CN108233242B CN 108233242 B CN108233242 B CN 108233242B CN 201810200358 A CN201810200358 A CN 201810200358A CN 108233242 B CN108233242 B CN 108233242B
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- cabinet body
- switch
- pin
- divide
- rotating arm
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- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Trip Switchboards (AREA)
Abstract
The invention discloses 12kV high-voltage switch equipment, which comprises a cabinet body (1), wherein a switch operating mechanism (4) positioned at the left side of a front door is arranged on the cabinet body (1); the rear side of switch operating device (4) is provided with mechanical interlocking device (20), and mechanical interlocking device (20) are including support (33), turning arm (25), connecting rod (24), go up rocking arm (32), lower rocking arm (22) and latch plate (21), and latch plate (21) are on a parallel with the pivot setting of operation location handle (2) and can slide in support (28), are provided with round pin axle (30) on latch plate (21), and the one end of turning arm (25) is installed on circuit breaker transmission shaft (26) of vacuum circuit breaker (18). The beneficial effects of the invention are as follows: compact structure, simple operation, perfect mechanical interlocking function and safe and reliable use.
Description
Technical Field
The invention relates to the technical field of electrical control equipment structures, in particular to 12kV high-voltage switch equipment.
Background
The fixed 12kV high-voltage switch equipment is popular in the market due to the advantages of simple structure, reliable connection of the primary conductive loop, low cost and the like. However, the external dimension of the cabinet body of the general fixed 12kV switch equipment is designed to be larger due to the factors of element arrangement, switch operation mode and the like. In many building power distribution projects, 12kV switchgear is mostly installed in basements. Because of the underground space limitation, the overall size of switchgear in the power distribution project needs to be minimized. The prior fixed 12kV switch equipment cannot be widely used in building power distribution engineering due to the large external dimension. For a fixed 12kV switchgear, the operation locking function of a circuit breaker and a disconnecting switch is a key related to the operation safety of the equipment. Because of the many types of circuit breaker structures on the market, the mechanical interlock must be non-standard designed to meet the operational lockout function. The existing mechanical interlocking scheme can not be well adapted to the multi-type change of the circuit breaker, and has great defects in meeting the safety and convenience of the operation locking function.
The market requires miniaturized, safe and reliable operation, economical and reasonable fixed 12kV switchgear.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides 12kV high-voltage switch equipment which is compact in structure, simple to operate, safe and reliable to use, and has a perfect mechanical interlocking function.
The aim of the invention is achieved by the following technical scheme: the 12kV high-voltage switch equipment comprises a cabinet body, wherein a bus chamber and a circuit breaker chamber are arranged in the cabinet body, a grounding switch and a vacuum circuit breaker are arranged in the circuit breaker chamber, a front door is arranged on the front face of the cabinet body, a switch operating mechanism positioned on the left side of the front door is arranged on the cabinet body, a switching-on/switching-off rotary table and an operation positioning handle are rotatably arranged on the switch operating mechanism through a rotary shaft, an upper pull rod and a lower pull rod are fixedly arranged on the switching-on rotary table, the other end of the lower pull rod is hinged with a crank arm of the grounding switch, and a shifting fork is fixedly arranged on the operation positioning handle; an isolating switch is arranged between the bus chamber and the breaker chamber, the isolating switch is of a rotary structure, a fixed contact positioned at the upper end of the isolating switch is arranged in the bus chamber, a fixed contact positioned at the lower end of the isolating switch is arranged in the breaker chamber, a rotatable rotary moving contact is arranged between the two fixed contacts, and the rotary moving contact is hinged with the other end of the upper pull rod; the rear side of the switch operating mechanism is provided with a mechanical interlocking mechanism, the mechanical interlocking mechanism comprises a bracket, a crank arm, a connecting rod, an upper rotating arm, a lower rotating arm and a locking plate, the locking plate is arranged parallel to a rotating shaft of an operation positioning handle and can slide in the bracket, a pin shaft is arranged on the locking plate, one end of the crank arm is arranged on a circuit breaker transmission shaft of a vacuum circuit breaker, the other end of the crank arm is hinged with the connecting rod, the other end of the connecting rod is hinged with one end of the lower rotating arm, the lower rotating arm is sheathed and welded with the upper rotating arm into a whole, a waist-shaped hole is formed in the end face of the other end of the upper rotating arm, and the upper rotating arm is sheathed on the pin shaft through the waist-shaped hole; the bottom of divide-shut brake carousel is provided with the recess, be provided with the driving lever subassembly on the switch operating device, the cover has the driving lever pin on the driving lever subassembly, the driving lever pin sets up in the U-shaped mouth of shift fork, the other end of driving lever subassembly is connected with the location welding plate through the nut, the location welding plate is located the shift fork top, last constant head tank and lower constant head tank have been seted up in the location welding plate, go up constant head tank and lower constant head tank intercommunication, be provided with spring and divide-shut brake carousel locating pin on the location welding plate, the lower tip of divide-shut brake carousel locating pin is provided with annular step, the spring housing is in the lower tip of divide-shut brake carousel locating pin, and the top of spring is fixed in on the annular step, the tip of divide-shut brake carousel locating pin inserts in the recess under the spring force effect in order to restrict the rotation of divide-shut brake carousel, be provided with the spacer pin that is located in last constant head tank on the divide-shut brake carousel locating pin cylinder.
The cabinet body is also provided with an instrument room opposite to the bus room.
A door lock rod is arranged between the switch operating mechanism and the front door.
The top of the cabinet body is provided with a pressure relief cover plate.
The circuit breaker room is also provided with a current transformer and a lightning arrester, and the current transformer is provided with a branch row.
And a wall bushing and a main busbar are arranged in the busbar chamber.
And a plurality of adjusting holes are formed in the crank arm and the connecting rod along the length direction of the crank arm and the connecting rod.
The invention has the following advantages:
(1) According to the invention, the isolating switch is arranged between the bus chamber and the breaker chamber, and is used for separating and combining the loop, and has an electrical isolation effect on the two functional compartments, so that the size of the switchgear cabinet body is reduced.
(2) A mechanical interlocking mechanism is arranged at the front end of the switch operating mechanism, and an operation locking function between the vacuum circuit breaker and the switch operating mechanism is formed through the mechanical interlocking mechanism.
(3) The mechanical interlocking mechanism can adapt to the locking requirements of circuit breakers of different specifications.
(4) The pressure relief cover plate is arranged at the top of the cabinet body, so that the damage to personnel caused by high-pressure gas generated by short circuit faults is avoided.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic diagram of a mechanical interlock;
FIG. 4 is a schematic view of the opening of the adjustment holes;
FIG. 5 is a schematic view of the switch operating mechanism;
FIG. 6 is a schematic view of a position welding plate;
in the figure, a 1-cabinet body, a 2-operation positioning handle, a 3-door lock rod, a 4-switch operating mechanism, a 5-front door, a 6-breaker chamber, a 7-grounding switch, an 8-lightning arrester, a 9-current transformer, a 10-branch row, an 11-isolating switch, a 12-bus chamber, a 13-wall bushing, a 14-main bus row, a 15-pressure release cover plate, a 16-instrument chamber, a 17-rotating moving contact, an 18-vacuum breaker, a 19-opening and closing turntable and a 20-mechanical interlocking mechanism, the device comprises a locking plate 21, a lower rotating arm 22, a shifting fork 23, a connecting rod 24, a crank arm 25, a circuit breaker transmission shaft 26, a regulating hole 27, an upper pull rod 28, a lower pull rod 29, a pin shaft 30, a kidney-shaped hole 31, an upper rotating arm 32, a bracket 33, a groove 34, a switching-on/off rotary disc locating pin 35, a locating pin 36, a spring 37, a nut 38, a shifting rod 39, a shifting rod assembly 40, a shifting rod pin 41, a locating welding plate 42, a lower locating groove 43 and an upper locating groove 43.
Detailed Description
The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:
as shown in fig. 1-6, a 12kV high-voltage switch device comprises a cabinet body 1, wherein a bus chamber 12 and a breaker chamber 6 are arranged in the cabinet body 1, a grounding switch 7 and a vacuum breaker 18 are arranged in the breaker chamber 6, a front door 5 is arranged on the front surface of the cabinet body 1, a switch operating mechanism 4 positioned on the left side of the front door is arranged on the cabinet body 1, a switching-on/switching-off rotary table 19 and an operation positioning handle 2 are rotatably arranged on the switch operating mechanism 4 through a rotary shaft, an upper pull rod 28 and a lower pull rod 29 are fixedly arranged on the switching-on rotary table 19, the other end of the lower pull rod 29 is hinged with a crank arm of the grounding switch 7, and a shifting fork 23 is fixedly arranged on the operation positioning handle 2; an isolating switch 11 is arranged between the bus chamber 12 and the breaker chamber 6, the isolating switch 11 is of a rotary structure, a fixed contact at the upper end of the isolating switch 11 is arranged in the bus chamber 12, a fixed contact at the lower end of the isolating switch 11 is arranged in the breaker chamber 6, a rotatable rotating moving contact 17 is arranged between the two fixed contacts, and the rotating moving contact 17 is hinged with the other end of the upper pull rod 28.
As shown in fig. 2-3, the mechanical interlocking mechanism 20 is disposed at the rear side of the switch operating mechanism 4, the mechanical interlocking mechanism 20 includes a bracket 33, a crank arm 25, a connecting rod 24, an upper rotating arm 32, a lower rotating arm 22 and a lock plate 21, the lock plate 21 is disposed parallel to the rotation axis of the operation positioning handle 2 and is slidable in the bracket 33, a pin shaft 30 is disposed on the lock plate 21, one end of the crank arm 25 is mounted on a breaker transmission shaft 26 on the vacuum breaker 18, the other end of the crank arm 25 is hinged with the connecting rod 24, the other end of the connecting rod 24 is hinged with the lower rotating arm 22, the lower rotating arm 22 is integrally welded with the upper rotating arm 32 in a sleeved mode, a kidney-shaped hole 31 is formed at the other end of the upper rotating arm 32, and the upper rotating arm 32 is sleeved on the pin shaft 30 through the kidney-shaped hole 31.
The bottom of divide-shut brake carousel 19 is provided with recess 34, be provided with driving lever subassembly 39 on the switch operating device 4, the cover has driving lever pin 40 on the driving lever subassembly 39, driving lever pin 40 sets up in the U-shaped mouth of shift fork 23, the other end of driving lever subassembly 39 is connected with location welding plate 41 through nut 38, location welding plate 41 is located shift fork 23 top, location welding plate 41 has seted up upper positioning groove 43 and lower constant head tank 42, upper positioning groove 43 communicates with lower positioning groove 42, be provided with spring 37 and divide-shut brake carousel locating pin 35 on the location welding plate 41, the lower tip of divide-shut brake carousel locating pin 35 is provided with annular step, spring 37 cover is in the lower tip of divide-shut brake carousel locating pin 35, and the top of spring 37 is fixed in annular step, the top of divide-shut brake carousel locating pin 35 inserts in recess 34 under the elasticity effect of spring 37 in order to restrict the rotation of divide-shut brake carousel 19, be provided with spacing round pin 36 in upper positioning groove 43 on the cylinder of divide-shut brake carousel locating pin 35.
The cabinet body 1 is also provided with an instrument room 16 corresponding to the bus room 12, and a door lock rod 3 is arranged between the switch operating mechanism 4 and the front door 5; the breaker chamber 6 is also provided with a current transformer 9 and a lightning arrester 8, and the current transformer 9 is provided with a branch row 10; wall bushing 13 and main busbar 14 are installed in busbar chamber 12.
The top of the cabinet body 1 is provided with a pressure relief cover plate 15, when a short circuit fault occurs in the cabinet, high-temperature and high-pressure gas generated by an electric arc destructively opens the pressure relief cover plate 15, and the high-pressure gas is released to the top. The high-pressure gas is prevented from being released from the front door and the rear door of the cabinet body to cause injury to personnel.
As shown in fig. 4, the crank arm 25 and the connecting rod 24 are provided with a plurality of adjusting holes 27 along the length direction thereof, and different movement strokes can be realized by adjusting the matching relation of the adjusting holes 27 on the crank arm 25 and the connecting rod 24, so that the mechanical interlocking mechanism 20 can adapt to the positions of the breaker transmission shafts 26 of the vacuum breakers 18 with different specifications, and has wide adaptability.
The working process of the invention is as follows: a mechanical interlock mechanism 20 is provided in the breaker chamber 6, and an operation locking function between the vacuum breaker 18 and the switch operating mechanism 4 is formed by the mechanical interlock mechanism 20. The specific method is as follows: when the vacuum circuit breaker 18 is switched on, the circuit breaker transmission shaft 26 rotates clockwise as shown in fig. 3, the crank arm 25 on the circuit breaker transmission shaft 26 is driven to rotate clockwise together, the crank arm 25 pulls the connecting rod 24 to move downwards, the connecting rod 24 drives the lower rotating arm 22 to rotate clockwise again, the upper rotating arm 32 also rotates clockwise, the upper rotating arm 32 drives the lock plate 21 to move linearly right along the bracket 33, and when the lock plate 21 stretches into the U-shaped opening in the middle of the fork opening of the fork 23, the lock plate 21 limits the fork 23 to rotate. Because the shifting fork 23 is fixed on the operation positioning handle 2, the rotation of the operation positioning handle 2 is limited, and the rotation of the opening and closing turntable 19 is further prevented after the operation positioning handle 2 is limited. When the vacuum circuit breaker 18 is opened, the related parts move reversely to release the limit on the operation positioning handle 2, and the isolating switch 11 and the grounding switch 7 can be operated.
The operation positioning handle 2 controls the opening and closing rotary table 19 to rotate in the following manner: in the initial state, the opening and closing rotary table locating pin 35 is inserted into the groove 34 at the bottom of the opening and closing rotary table 19, at this moment, the lock plate 21 just can extend into the U-shaped opening of the shifting fork 23 to limit the rotation of the shifting fork 23, and the operation locating handle 2 can not be rotated any more, so that the rotation of the opening and closing rotary table 19 is limited, at this moment, the upper pull rod 28 and the lower pull rod 29 can not operate the isolating switch 11 and the grounding switch 7, the occurrence of misoperation of the on-load isolating switch 11, the on-load grounding switch 7 and the like is effectively prevented, and the safety of the switch equipment is ensured. When the lock plate 21 is pulled out of the U-shaped opening of the shifting fork 23, the operation positioning handle 2 can be rotated leftwards at this moment, the shifting fork 23 is driven to rotate anticlockwise by the operation positioning handle 2, the shifting fork 23 is driven to drive the shifting rod pin 40 to move leftwards along the shifting rod assembly 39, the further positioning welding plate 41 is moved leftwards, the limiting pin 36 falls into the lower positioning groove 42 in the moving process, the opening and closing turntable positioning pin 35 withdraws from the groove 34 at the bottom of the opening and closing turntable 19, the limitation on the operation positioning handle 2 is relieved, and the isolating switch 11 and the grounding switch 7 can be operated at this moment.
Claims (5)
1. 12kV high tension switchgear, it includes cabinet body (1), be provided with busbar room (12) and circuit breaker room (6) in the cabinet body (1), be provided with earthing switch (7) and vacuum circuit breaker (18) in circuit breaker room (6), the front of cabinet body (1) is provided with qianmen (5), its characterized in that: a switch operating mechanism (4) positioned at the left side of the front door is arranged on the cabinet body (1), a switching-on/off rotary table (19) and an operation positioning handle (2) are rotatably arranged on the switch operating mechanism (4) through a rotary shaft, an upper pull rod (28) and a lower pull rod (29) are fixedly arranged on the switching-on/off rotary table (19), the other end of the lower pull rod (29) is hinged with a crank arm of the grounding switch (7), and a shifting fork (23) is fixedly arranged on the operation positioning handle (2); an isolating switch (11) is arranged between the bus chamber (12) and the breaker chamber (6), the isolating switch is of a rotary structure, a fixed contact at the upper end of the isolating switch (11) is arranged in the bus chamber (12), a fixed contact at the lower end of the isolating switch (11) is arranged in the breaker chamber (6), a rotatable rotating contact (17) is arranged between the two fixed contacts, and the rotating contact (17) is hinged with the other end of the upper pull rod (28); the rear side of the switch operating mechanism (4) is provided with a mechanical interlocking mechanism (20), the mechanical interlocking mechanism (20) comprises a bracket (33), a crank arm (25), a connecting rod (24), an upper rotating arm (32), a lower rotating arm (22) and a locking plate (21), the locking plate (21) is parallel to the rotating shaft of the operating positioning handle (2) and can slide in the bracket (33), and a pin shaft (30) is arranged on the locking plate (21); one end of a crank arm (25) is arranged on a breaker transmission shaft (26) of a vacuum breaker (18), the other end of the crank arm (25) is hinged with a connecting rod (24), the other end of the connecting rod (24) is hinged with one end of a lower rotating arm (22), the lower rotating arm (22) and an upper rotating arm (32) are sleeved and welded into a whole, a waist-shaped hole (31) is formed in the end face of the other end of the upper rotating arm (32), and the upper rotating arm (32) is sleeved on a pin shaft (30) through the waist-shaped hole (31); the bottom of the opening and closing rotary table (19) is provided with a groove (34), the switch operating mechanism (4) is provided with a deflector rod assembly (39), the deflector rod assembly (39) is sleeved with a deflector rod pin (40), and the deflector rod pin (40) is arranged in a U-shaped opening of the shifting fork (23); the other end of driving lever subassembly (39) is connected with location welding board (41) through nut (38), location welding board (41) are located shift fork (23) top, go up constant head tank (43) and constant head tank (42) down have been seted up in location welding board (41), go up constant head tank (43) and constant head tank (42) intercommunication down, be provided with spring (37) and divide-shut brake carousel locating pin (35) on location welding board (41), the lower tip of divide-shut brake carousel locating pin (35) is provided with annular step, spring (37) cover is in the lower tip of divide-shut brake carousel locating pin (35), and the top of spring (37) is fixed in on the annular step, the top tip of divide-shut brake carousel locating pin (35) inserts in recess (34) under spring (37) elasticity effect in order to restrict the rotation of divide-shut brake carousel (19), be provided with on the cylinder of divide-shut brake carousel locating pin (35) and be located spacing round pin (36) in last constant head tank (43), the top of cabinet body (1) is provided with pressure release (15), still be provided with in circuit breaker room (6) and current transformer (9) on branch transformer (10).
2. A 12kV high voltage switchgear as claimed in claim 1, wherein: the cabinet body (1) is also provided with an instrument room (16) opposite to the bus room (12).
3. A 12kV high voltage switchgear as claimed in claim 1, wherein: a door lock rod (3) is arranged between the switch operating mechanism (4) and the front door (5).
4. A 12kV high voltage switchgear as claimed in claim 1, wherein: a wall bushing (13) and a main busbar (14) are arranged in the busbar chamber (12).
5. A 12kV high voltage switchgear as claimed in claim 1, wherein: a plurality of adjusting holes (27) are formed in the crank arm (25) and the connecting rod (24) along the length direction of the crank arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200358.7A CN108233242B (en) | 2018-03-12 | 2018-03-12 | 12kV high-voltage switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200358.7A CN108233242B (en) | 2018-03-12 | 2018-03-12 | 12kV high-voltage switch equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108233242A CN108233242A (en) | 2018-06-29 |
| CN108233242B true CN108233242B (en) | 2024-01-30 |
Family
ID=62658295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810200358.7A Active CN108233242B (en) | 2018-03-12 | 2018-03-12 | 12kV high-voltage switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108233242B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201383464Y (en) * | 2008-11-20 | 2010-01-13 | 江山市森源电器有限公司 | Mechanical locking misoperation prevention interlocking device |
| CN202159620U (en) * | 2011-07-01 | 2012-03-07 | 湖北长江电气有限公司 | Five-prevention mechanical lock interlocking device for high voltage switch cabinet |
| CN204130942U (en) * | 2014-07-22 | 2015-01-28 | 上海伊顿通用设备有限公司 | A kind of switch cubicle with ground connection interlocking |
| CN207939083U (en) * | 2018-03-12 | 2018-10-02 | 四川达卡电气有限公司 | A kind of 12kV high-tension switch gears |
-
2018
- 2018-03-12 CN CN201810200358.7A patent/CN108233242B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201383464Y (en) * | 2008-11-20 | 2010-01-13 | 江山市森源电器有限公司 | Mechanical locking misoperation prevention interlocking device |
| CN202159620U (en) * | 2011-07-01 | 2012-03-07 | 湖北长江电气有限公司 | Five-prevention mechanical lock interlocking device for high voltage switch cabinet |
| CN204130942U (en) * | 2014-07-22 | 2015-01-28 | 上海伊顿通用设备有限公司 | A kind of switch cubicle with ground connection interlocking |
| CN207939083U (en) * | 2018-03-12 | 2018-10-02 | 四川达卡电气有限公司 | A kind of 12kV high-tension switch gears |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108233242A (en) | 2018-06-29 |
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